Treating a common brain tumor with multiple sessions of radiation appears to result in less brain swelling than treating the tumor once with a high dose of radiation, say researchers from the Lombardi Comprehensive Cancer Center at Georgetown University Hospital.

A new Japanese study suggests that using mobile phones does not raise the risk of brain tumors. The study, conducted by Tokyo Women's Medical University, found no increased risk of the three main types of brain cancer in those who regularly use mobile phones.

A patient who had been treated for bilateral breast carcinoma subsequently developed a metastatic breast lesion in a meningioma. Although it is not uncommon for more than one tumor to occur in the same patient, metastases from one tumor into another tumor are rare ("tumor to tumor" phenomenon).